kittle vs morose

kittle

adj
  • Ticklish. 

  • Not easily managed 

verb
  • To tickle, to touch lightly. 

  • To bring forth young, as a cat; to kitten; to litter. 

morose

adj
  • Sullen, gloomy; showing a brooding ill humour. 

How often have the words kittle and morose occurred in a corpus of books? (source: Google Ngram Viewer )